Submission #969077

#	Time	Username	Problem	Language	Result	Execution time	Memory
969077		vjudge1	Global Warming (CEOI18_glo)	C++17	38 / 100	2047 ms	1880 KiB

glo

#include<iostream>
#include<vector>
#include<algorithm>
using namespace std;

vector<int> dp;

int lis(int t[],int n,int a,int b,int x){
    dp.clear();
    int cur;
    for(int i=1;i<=n;++i){
        cur=t[i]+x*(i<=b);
        int idx=lower_bound(dp.begin(),dp.end(),cur)-dp.begin();
        if(idx==dp.size()) dp.push_back(cur);
        else dp[idx]=cur;
    }
    return dp.size();
}
int main(){
    ios_base::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr);
    int n,x; cin >> n >> x;
    int t[n+1];
    for(int i=1;i<=n;++i) cin >> t[i];
    int maxi=0;
    if(x==0){
        cout << lis(t,n,0,0,0);
        return 0;
    }
    for(int e=1;e<=n;++e){
        maxi=max(lis(t,n,1,e,-x),maxi);
        //cout << lis(t,n,1,e,-x) << " ";
    }
    cout << maxi;
}

Compilation message (stderr)

glo.cpp: In function 'int lis(int*, int, int, int, int)':
glo.cpp:14:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 |         if(idx==dp.size()) dp.push_back(cur);
      |            ~~~^~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 13 / 13
• Subtask 4: 10 / 10
• Subtask 5: 0 / 20
• Subtask 6: 0 / 17
• Subtask 7: 0 / 25